Smart Ring Step Meter Rate Pressure Oxygen Sleep Monitoring Smart Ring Features: Disruptive smart wearable form Exercise monitoring, recording calorie consumption and daily metabolism during exercise Indoor running, outdoor running, treadmill, walking...Identify your multi-sport modes protection of your sleep from falling asleep to waking up. Under round-the-clock sleep monitoring, your lunch can be automatically recorded, supporting most of your sleep patterns and giving you better sleep suggestions by recording different sleep patterns. 7X24 monitoring, by tracking your around the clock, you can understand your physical condition during exercise and relaxation during the day. If your heartbeat appears irregular or too fast or too slow, you can self-check your physical condition in time and in advance. Continuous oxygen monitoring can be more accurate in any environment. is equipped with an optical oxygen sensor to round-the-clock oxygen monitoring, allowing you to better understand your oxygen saturation and make adjustments to your body. Product Acceleration sensor: QMA6100P Battery: 18mAh, 3.7/4.2V lithium battery Exercise measurements: calories, steps, mileage Sleep monitoring: 20:00 ~ 8:00 (automatically extended to 12:00) Multi-sport modes: running, cycling, skipping, fitness, mountain climbing, yoga, golf, dance measurement: Support pressure measurement: "Support photoelectric alarm: not supported oxygen measurement: supports accurate glucose measurement not supported (electrochemical measurement) alarm: Not supported Automatic health monitoring: Support Activity information data storage: Supported Historical data storage period: 7 days rolling storage Working temperature: 0 ~ 45 Storage temperature: -10 ~ 55 Working humidity: 5%~95% (no condensation) electricity protection: electricity standard contact: 6KV, : 10KV Surge protection: 12V Charging temperature protection: 45 Charging voltage: 4.6 ~ 5.2V Products include: Smart ring*1